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   1  <?php
   2  
   3  /**
   4   * @package     Joomla.Installation
   5   * @subpackage  Controller
   6   *
   7   * @copyright   (C) 2017 Open Source Matters, Inc. <https://www.joomla.org>
   8   * @license     GNU General Public License version 2 or later; see LICENSE.txt
   9   */
  10  
  11  namespace Joomla\CMS\Installation\Controller;
  12  
  13  use Joomla\CMS\MVC\Controller\BaseController;
  14  use Joomla\CMS\MVC\View\AbstractView;
  15  
  16  // phpcs:disable PSR1.Files.SideEffects
  17  \defined('_JEXEC') or die;
  18  // phpcs:enable PSR1.Files.SideEffects
  19  
  20  /**
  21   * Display controller class for the Joomla Installer.
  22   *
  23   * @since  3.1
  24   */
  25  class DisplayController extends BaseController
  26  {
  27      /**
  28       * Method to display a view.
  29       *
  30       * @param   boolean  $cachable   If true, the view output will be cached.
  31       * @param   boolean  $urlparams  An array of safe URL parameters and their variable types, for valid values see {@link JFilterInput::clean()}.
  32       *
  33       * @return  \Joomla\CMS\MVC\Controller\BaseController  This object to support chaining.
  34       *
  35       * @since   1.5
  36       */
  37      public function display($cachable = false, $urlparams = false)
  38      {
  39          $app = $this->app;
  40  
  41          $defaultView = 'setup';
  42  
  43          // If the app has already been installed, default to the remove view
  44          if (
  45              file_exists(JPATH_CONFIGURATION . '/configuration.php')
  46              && filesize(JPATH_CONFIGURATION . '/configuration.php') > 10
  47              && file_exists(JPATH_INSTALLATION . '/index.php')
  48          ) {
  49              $defaultView = 'remove';
  50          }
  51  
  52          /** @var \Joomla\CMS\Installation\Model\ChecksModel $model */
  53          $model = $this->getModel('Checks');
  54  
  55          $vName = $this->input->getWord('view', $defaultView);
  56  
  57          if (!$model->getPhpOptionsSufficient() && $defaultView !== 'remove') {
  58              if ($vName !== 'preinstall') {
  59                  $app->redirect('index.php?view=preinstall');
  60              }
  61  
  62              $vName = 'preinstall';
  63          } else {
  64              if ($vName === 'preinstall') {
  65                  $app->redirect('index.php?view=setup');
  66              }
  67  
  68              if ($vName === 'remove' && !file_exists(JPATH_CONFIGURATION . '/configuration.php')) {
  69                  $app->redirect('index.php?view=setup');
  70              }
  71  
  72              if ($vName !== $defaultView && !$model->getOptions() && $defaultView !== 'remove') {
  73                  $app->redirect('index.php');
  74              }
  75          }
  76  
  77          $this->input->set('view', $vName);
  78  
  79          return parent::display($cachable, $urlparams);
  80      }
  81  
  82      /**
  83       * Method to get a reference to the current view and load it if necessary.
  84       *
  85       * @param   string  $name    The view name. Optional, defaults to the controller name.
  86       * @param   string  $type    The view type. Optional.
  87       * @param   string  $prefix  The class prefix. Optional.
  88       * @param   array   $config  Configuration array for view. Optional.
  89       *
  90       * @return  AbstractView  Reference to the view or an error.
  91       *
  92       * @since   3.0
  93       * @throws  \Exception
  94       */
  95      public function getView($name = '', $type = '', $prefix = '', $config = array())
  96      {
  97          $view = parent::getView($name, $type, $prefix, $config);
  98  
  99          if ($view instanceof AbstractView) {
 100              // Set some models, used by various views
 101              $view->setModel($this->getModel('Checks'));
 102              $view->setModel($this->getModel('Languages'));
 103          }
 104  
 105          return $view;
 106      }
 107  }